To investigate the effect of different pipeline parameters on pipeline wear and to optimize the pipeline parameters,a numerical simulation study of a coarse aggregate containing paste backfill pipe conveying was carried out using response surface methodology(RSM).The effects of single and multi-factor coupling on pipe wear were analyzed based on the RSM test results,and the pipe parameters were optimized using MATLAB.The results show that under the single influencing factor,the pipe parameters affecting the maximum wear rate are pipe diameter,bend ratio and bend angle in descending order,while the interaction of pipe diameter and bend ratio plays a decisive role in the interaction of multi-factors.The optimal pipe parameters within the experimental design ranges are as follows:pipe diameter of 198.05 mm,bend angle of 84.50° and bend ratio of 4.57.
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